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<GroupBox x:Name="groupBox" Header="Operating System" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Height="74" Width="280">
<RadioButton GroupName="Os" Content="Windows XP" IsChecked="True"/>
<RadioButton GroupName="Os" Content="Windows Vista" />
<RadioButton GroupName="Os" Content="Windows 7" />
</GroupBox>
我收到一個錯誤消息,說我不能多次設置內容。我的XAML有什麼問題?
我使用C#和WPF